受肋环形索穹顶结构构型的启发，提出了一种新型肋环形可展开天线结构，旨在探索大口径天线的创新设计方案。首先，设计了一种带有驱动-锁定接头的基本可展开模块，通过依次组装多个基本可展开模块构成伸展臂，以作为径向支撑肋。进一步地，将多榀伸展臂沿环向阵列排布并相应设置预应力环索，构建得到了一种新型的肋环形可展开天线结构。在完全展开状态下，这种天线结构可视为索梁复合体系，借助有限元软件建立结构的仿真模型，进一步对该结构体系进行模态分析，对比发现：相较于现有构型，所提出的肋环形可展开结构具有更好的结构刚度特性，这表明该结构有望被应用于大口径天线设计。在此基础上，探索了这种肋环形结构形式在大口径天线中的应用，提出了一直径为58.2 m的可展开天线设计方案。为验证设计的可行性，利用多体动力学仿真软件Adams构建了该天线的仿真模型，并分别对其单榀伸展臂和整体结构进行了展开运动仿真。结果表明，所设计的结构能够顺利展开到位并实现可靠锁定，进一步验证了所提出的天线设计方案的可行性和有效性。研究表明，所提出的新型肋环形可展开天线结构兼具桁架式折展结构高刚度和肋式折展结构高折展比的优势，可为未来大口径天线的结构选型提供有益的参考。

Inspired by the structural configurations of ribbed cable domes, this study introduced a novel rib-patterned deployable antenna structure, aiming to explore innovative design solutions for large-aperture antennas. Firstly, this paper designed a basic deployable module with a driving-locking joint. By sequentially assembling multiple such modules, an extendable arm was constructed, which serves as a radial support rib. Furthermore, multiple extendable arms were arranged in a circumferential array, with corresponding prestressed loop cables, resulting in the construction of a novel rib-ring deployable antenna structure. In its fully deployed state, this structure can be conceptualized as a cable-beam composite system. A simulation model of the structure was created using finite element analysis software, and modal analysis was conducted. Comparative results reveal that, relative to existing configurations, the proposed rib-ring deployable structure exhibits superior structural stiffness, indicating its potential for application in large-aperture antenna design. Building on these, the study investigated the application of the rib-patterned structure to large-aperture antennas, proposing a deployable antenna design with a diameter of 58.2 meters. To assess the feasibility of this design, a simulation model of the antenna was developed using multi-body dynamics simulation software Adams, and deployment motion simulations were performed both for the individual extendable arm and the overall structure. The results demonstrate that the designed structure can successfully deploy into position and achieve reliable locking, further verifying the feasibility and effectiveness of the proposed antenna design. The study indicates that the novel rib-ring deployable antenna structure combines the advantages of truss-type deployable structures, which offer high stiffness, and rib-type deployable structures, which provide a high deployment ratio. This research offers valuable insights for the structural selection of future large-aperture antennas.